| - General - |
| Geofile: | NFLD/3339 |
| Companies: | Geological Survey of Newfoundland and Labrador |
| Contractor: | Goldak Airborne Surveys |
| Survey Area: | St. Alban's, Nfld. |
| NTS Areas: | 1M/13 |
| Related Geofiles: | Mag and radiometric data: NFLD/3272 |
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| - Survey Logistics - |
| Survey Date: | Oct. 16 to Nov. 26, 2015 |
| Block: | St. Alban's |
| Survey Extent: | 8394.76 line km; 1092.98 km Tie (302+48); 9487.74 km Total |
| Altitude: | Cessna 208 Caravan (C-GLDX): 125 m |
| Line Spacing: | 150 m, Az: 135°; Ties: 1000 m, Az: 045° |
| Positioning: | GPS Navigation; vertically mounted video camera |
| Instrumentation: | Three Geometrics G-822A split-beam cesium vapour magnetometers mounted in aircraft wingtip pods (transverse gradient) and tail boom (longitudinal gradient); Radiation Solutions Inc. RS500 Gamma-Ray Spectrometer; Totem 2A VLF-EM; GEM Systems GSM-19W Base station mag |
| Data Recorded: | Total field and Quadrature VLF-EM, 2-freq.: 25.2 KHz (LaMoure, ND) & 24.0 KHz (Cutler, ME) |
| Comments: | This Open File consists of the VLF-EM data from the 2016 St. Alban's survey, which were purchased separately from the original survey contract with Goldak Airborne Surveys. For the magnetic and radiometric survey data, see Airborne Survey ID DN09911, Open File Nfld/3272. |
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| - Digital Data - |
| Date Submitted: | August 15, 2017 |
| Confidentiality Date: | October 30, 2018 |
| Grid Cell Size: | 37 m |
| Total Data Points: | 1386286 |
| Projection of Data: | NAD83, UTM Zone 21 |
| Data Comments: | The VLF-EM transmitters experienced signal outages at various times during this survey. This resulted in data "drop-outs" or no-data areas (blank space on the maps and interpolated data) for specific segments. |
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